春秋时代，社会风雷激荡，烽烟四起，战火连天。下列说法不符合这一时期的是（　　）

一物体从静止开始做匀加速直线运动，加速度大小为3m/s²．求：

    My name is Amy . It is spring now . But my favourite season is summer . I often wear my skirts and T-shirts . Sometimes I wear my jeans . In summer it is often sunny and hot . Sometimes it's rainy in summer . I like swimming , so I usually swim with my friends on weekends in summer . In summer , I like eating ice-creams . They are delicious . I like summer so much . It brings so many wonderful things to me .

He is ________ in the pool. （    ）